Dispensing apparatus



Nov. 14, 1939. G. 5. ROGERS DISPENSING APPARATUS Filed Sept. 28, 1936 w 5 6 6 I 6 8 5 0 f0 w 0% Z r w 7 a 1 H 7 m w H G'eralo ger-s MMzw Patented Nov. 14, 1939 v D UNITED STATES PATENT OFFICE DISPENSING APPARATUS Gerald S. Rogers, Pittsburgh, Pa., assignor, by mesne, assignments, to Christian Brynoldt, Pittsburgh, Pa.

Application September 28, i936, Serial No. 102,940 4 Claims. (01. 285-169) This invention relates to dispensing apparatus, a' shoulder I on the plunger 83 and a spring and particularly to such apparatus which is escup 1| slidable on the shoulder and having an pecially adapted to: the handling of lubricant inturned flange abutting the inner endsof the such as grease. laws. The plunger 63 and the jaws 64 are Numerous devices or this kind have been pro-- urged toward the open end of the nose piece by a I posed heretofore, and it is an object of the in spring 65 compressed between a ball check valve vention to improve upon them by providing ap- 86 and a sealing washer 61 having a spring cup paratus of greater simplicity and effectiveness 68 therein. and of lower cost, than has previously been avail- The operation of the structure so far described able; In accordance with the invention, I prowill'probably be apparent from the drawing. 10

vide a coupler adapted to be secured to a dis- As the coupler ii is pressed onto the fitting, the penser, such as a grease gun, for connecting the head of the latter engages the ends or the jaws latter to a fitting having an enlarged head. I 64 and presses them into the nose piece 60, comprovide the coupler with jaws capable of gripping pressing the springs 63 and 65. This retraction the fitting head. By means of the construction of the jaws permits them'to move radially out- 15 to be described in greater detail hereinafter, I ward so that the head of the fitting passes by the am able to positively attach the coupler to the outer ends of the jaws. The latter are then fitting merely by pressing it thereon. The couurged outwardly along and inwardly toward the pier may be detached Irom the fitting by bendaxis of the nose piece by the spring 65 whereby ing it relatively thereto. This releases the seal to grip the fitting head.

between coupler and fitting and relieves the pres- When sufficient lubricant has been supplied, sure on the lubricant in the coupler. as from a gun connected to the adapter 8!, it is For a complete understanding of the invenonly necessary to bend the coupler relative to the tion, reference is made to the accompanying fitting to disconnect it therefrom. The condrawing illustrating a preferred embodiment and struction shown permits angular movement be- 25 several modifications. In the drawing, tween the coupler and fitting to a slight extent, Fig. 1 is a partial longitudinal section through say about 10'. When this has been exceeded, the coupler of my invention; however, one or more of the jaws 64 are forced Fig. 2 is an end view of the coupler; inwardly of the nose piece, against the force of Fig. 3 is a sectional view along the line III-III the springs 65 and 69. This permits the jaws to 30 of Fig. 1; and expand and free the head of the fitting. After Fig. 4 is a partial sectional view similar to Fig. initial retraction of the jaws 64, the cup ll en- 1 through a modified form of coupler; gages a shoulder 1la. on the plunger 63 and posi- The coupler shown in Figs. 1 through 3 is tively breaks the seal between the outer end of adapted to be connected to a grease gun for 00- the plunger and the cooperating fitting. This 35 operation with a headed fitting. Several suitable also relieves the pressure on the lubricant within types of gun and fitting are already known and the coupler, to facilitate detachment thereof. require no description. The coupler comprises a Fig. 4 shows a slight modification of the contubular nose piece 80 and an adapter 6| threaded struction shown in Fig. 1. In Fig. 4, the adapter thereinto having a valve seat 62 formed therein. Si is elongated as at 12 to slidably receive the m The end of the nose piece 60 remote from the seat inner end of the plunger 13. The sealing washer 25 has an inturned flange 60a. The nose piece 14 has peripheral engagement with the bore may be formed from a tube in a punch press or through the adapter 15 instead of with the inner may be drawn from fiat stock. A plunger 63 is wall of the nose piece 60, as in Fig. 1. Other parts reciprocable within the nose piece and has an of the coupler of Fig. 4 are designated by the 45 axial bore therethrough. The outer end of the same numerals as in Fig. 1 with a prime aifixed plunger is concave for sealing engagement with thereto. A washer 63a may be disposed on the the hemispherical end of afitting. Gripping jaws plunger 63' if desired, between cup I l and shoul- 64 are disposed about the plunger adjacent the der lib.

flanged end of the nose piece, the cooperating It will be apparent from the foregoing descrlp- 5 surfaces of the nose piece and jaws being so tion that the invention provides dispensing apshaped as to cause the jaws to move into gripparatus which represents a material simplifiping engagement with the head of a fitting when cation as compared to similar devices known premoved outwardly of the nose piece. The jaws B4 viously. As a result, the apparatus can be manare backed up by a spring 69 compressed between uiactured and sold more cheaply. At the same 55 10 the invention or the scope of the appended claims.

15 laws disposed in said end, ,a

2o racts;

time, tests indicate that the apparatus disclosed is even more effective than previous equipment of the kind in withstanding high pressure without developing leaks.

Although I have illustrated and described. herein but a preferred embodiment and a few modifications of the invention, it will be understood th theg constructipn iliustratedmay be inade'tvithdut-departing rmmtnfimfit I claim: 1. A coupler for attaching dispensers t headed fittings comprising a tubulai tracted at one end, radially-:1

gagement with a fitting in said jaws e ans pn said plunger abutting a shoulder tnereenwer sew ali-2e .er, abutting said Jaws, and d pted to engage said shoulder.

3. A coupler comprising a body, jaws movably carried therein adjacent one end, means for contracting said Jaws on movement thereof toward said end, a plunger having one end within said jaws, an outwardly extending shoulder on sat plungermmanent the enfl tgmote grgm the M ap /f a riijpres's t e dfishoulder, an annulus on the plunger adapted to'be en- ;ggaged by said Jaws on retraction thereof and to en a e shoulder on said plunger, a washer abutmentioned end of the plunger and ct with the interior of the the washer against the W c upl er comprising a tubular member rattea st ene enei gripping jaws carried in yieldingly urging said jaws toward {said een-1S3 gsaig endgior engaging a fitting inserted therein,

a sl ouldered plunger reciprocable within said Jaws dafited at-itslouterandntoxmakeisealinl I, U a :ifitting; meanssfongvieldingn li i'ir saidipliihger towardvthr:cbntractgdeenck of said member, a compression springasilmtmlnd-e iii piling and abiittingm'shouldenztherepn rot yieldifigly gingsaid JawsJoward-ithemon titers 

